reloading precision

  1. Jud96

    Sinclair Expander Mandrel Die Test

    I recently decided to buy a Sinclair Expander Mandrel die and test it out compared to the standard dies I’ve been using. Today I compared concentricity of loaded rounds, 16 were sized with a standard Hornady full length sizing die with expander ball and then bullets seated with a Hornady seating...

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